My Leopard Install Plan

I've had several people ask me recently what my plan was for installing Leopard. Tomorrow, I will be doing a complete clean install of Leopard on a new upgraded Hard Drive for my MacBook. I've had the external drive for a few months now, but figured Leopard was the perfect time to install it since I'll be erasing everything off the Mac and reinstalling anyway. The process I'll be taking, will be very similar to what many of you will do should you choose to perform a full Erase and Install of Mac OS 10.5. Adam Christianson of the MacCast has posted a great show detailing his plan for upgrading to Leopard. For all the details, you can listen to Adam's excellent podcast. But in a nutshell, below are the steps that I'll take.

Disclaimer: This is a more advanced method of installing an Apple OS and not at all necessary for the average Mac user. I perform this plan because I like to take the opportunity to "spring clean" with OS releases. For most people, performing a simple Upgrade or Archive and Install will be just fine.

1. Confirm my Mac is healthy and in good working order (I'll perform a verity of maintenance tasks and hardware checks)
2. Print my database of Registration Info and Locate all my Application Installer CDs (this assumes you have such a database, if you don't now might be a good time to put one together)
3. Create a full bootable clone of my machine to an external Hard Drive (I use SuperDuper!)
4. Perform secondary backups of critical files (I backup my entire Home folder to my iPod and burn DVDs of my Documents Folder for later off-site archival)
5. Deauthorize my iTunes account (don't forget to deauthorize any iTunes account you may have running under Windows via BootCamp, Parallels or VMWare, etc.)
6. Deactivate any other software that only allows a limited number of activations, such as the Adobe Creative Suite
7. Sync all devices and .Mac
8. Repair Permissions
9. Unplug all cables except my power cord (I have a laptop- unplug all cables except power, monitor, keyboard and mouse if you have a desktop)
10. Boot from the Installer DVD and use Disk Utility to perform a final repair of the Disk
11. Use the Erase and Install (I choose the advanced options and remove extra printer drivers and foreign languages I won't use to save space and time)
12. Restart computer after install and run Software Update
13. Migrate my User Data only using MIgration Assistant
14. Reinstall Applications from their CDs and Download Shareware Apps from the Web (Check at this time to ensure 10.5 compatability)
15. Re-run Software Update, and run it until no more updates are found (this includes third party utility's software update programs)
16. Repair DIsk Permissions
17. Keep copy of old OS bootable backup for at least a month to ensure all runs well, take Backup DVDs to off-site storage.